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Comodo is a U.S based Worldwide Cybersecurity company, providing computer software and full-suite Enterprise Cyber Security Solutions.

Comodo Group, Inc.
Industry Computer software
Founded United Kingdom (1998 (1998))[1]
Headquarters 1255 Broad Street, Clifton, New Jersey, United States
Area served
Key people
Melih Abdulhayoğlu (President and CEO)
Products Security software, Public key certificates, Advanced Endpoint Protection, Data Loss Prevention, POS Security, Enterprise Cyber Security Solutions
Services Computer security, Enterprise Cyber Security Solutions, Website Security
Number of employees

The company is headquartered in Clifton, New Jersey in the United States. It has international offices in the United Kingdom, Japan, China, India, Romania, Turkey and the Philippines.[2]

Comodo currently secures over 100 million endpoints globally, through their endpoint protection solution. Thousands of companies and organizations rely on Comodo's technology to authenticate, validate and secure their most precious asset – information - and to combat constant malware threats and cyberattacks that are creating havoc on a global scale.[3]

As of February 3rd 2017, Comodo is also the largest issuer of SSL certificates with a 44% market share on 13.9% of all web domains.[4]



The company was founded in 1998 in the United Kingdom,[1] by Melih Abdulhayoğlu, who remains its CEO. The company relocated to the United States in 2004. Its product line is focused on computer and internet security. The firm operates a Certificate Authority that issues SSL certificates, and offers information security products for both enterprises and consumers that secure endpoints, networks and boundaries against cyber threats using on premise and cloud-based offerings.[5] The company also helped on setting standards by contributing to the IETF (Internet Engineering Task Force) DNS Certification Authority Authorization (CAA) Resource Record.[6]


  • Comodo CA Limited: Based in City of Salford, Greater Manchester, UK,[7] is a digital certificate authority that issues SSL and other digital certificates. According to, Comodo is the largest digital certificate provider.[8][9]
  • Comodo Security Solutions, Inc: Based in Clifton, NJ, develops and markets security software for commercial and consumer use. This includes web site vulnerability and penetration scanning, corporate and consumer pc security systems and other networks security products. Comodo AntiVirus Labs support all versions of their security systems.[10]
  • Based in Louisville, Kentucky, the company provides managed DNS services.[11]


Consumer Security ProductsEdit

  • Comodo Internet Security (CIS) is a suite of security products for the desktop, provided free, with additional features available for a fee.[12] Support requires a subscription. It includes a personal firewall, Host-based intrusion detection system and antivirus program.[13]
  • Comodo Antivirus- A free Antivirus product that supports all major OS including Mac, (from OS X 10.4),[14] Linux (from Ubuntu 12.04)[15] and Windows (from XP S2, including Windows 10).[16]
  • Comodo Mobile Security - A free Android application that protects mobile devices against viruses, worms and scripts. In addition, it also features SMS & Call Blocking, a software & process manager, data and apps backup and data traffic Monitor.
  • Comodo email certificate - S/MIME-enabling certificates, free for personal use, per-year fee for corporate use.[17]

Enterprise Products - Digital Certificates and Certificate ManagementEdit

  • Comodo SSL - Comodo was founded as a Certificate Authority selling Comodo SSL and digital certificates. Its primary source of revenue comes from related products to business and enterprises.[18] Related E-Commerce products include PCI Compliance Scanning and Web Site Vulnerability Scanning.
  • Comodo Certificate Manager (CCM) is a cloud-based digital certificate management product allowing enterprises to manage certificates.[19]

Enterprise Products - SecurityEdit

  • Comodo Advanced Endpoint Protection (AEP) provides next-generation endpoint protection, combining Comodo Client Security, ITSM, and Valkyrie file analysis.[20]
  • Valkyrie Cloud File Analysis Platform - The Valkyrie cloud-based file analysis platform uses multiple techniques to provide a verdict of good or bad on unknown files.
  • Comodo Client Security is the client application used by AEP to provide endpoint security.
  • IT and Security Manager (ITSM)- ITSM is the management console used by AEP, providing a single consolidated dashboard of all devices and from which IT administrators can act on issues, report on current risk, and push changes. It allows for the configuration of security policies and visibility into the security posture and health of enterprise endpoints (PCs and mobile devices).
  • Comodo Dome (cDome Shield, cDome Enterprise, cDome Data Protection) - a family of products providing a cloud-delivered secure web platform providing various security functions including web security, anti spam, secure VPN, and next generation firewall.[21] In May 2014, the Comodo Group acquired MyDLP, an open source data loss prevention system and integrated the functionality as Comodo Dome Data Protection.
  • Comodo Securebox was released in July 2014 and was jointly developed with Western Union with the intention of solving the problem of an application needing to conduct sensitive activities such as financial transactions from an already compromised system. Securebox containment technology protects the application and its activities even if the computer is infected with malware[22][23]
  • Comodo Mobile Device Management - Comodo MDM software could rightly be called a powerful tool in the hands of IT administrators. Using this tool they can manage and at the same time ensure the security of a large number of mobile devices, both personal as well as those that are part of a corporate network.[24][25]
  • Comodo cWatch a breach prevention and threat detection managed SaaS offering hosted by Comodo.
  • Comodo Korugan - In 2014 Comodo introduced the Korugan line of Unified Threat Management Appliances that provide a bundle of network security solutions such as firewall, gateway antivirus and end security management.[26][27]

Web browsers offered by ComodoEdit

Other ProductsEdit

  1. Comodo System Utilities - PC Magazine reviewed the product concluding "it is an effective system-enhancing utility that is as potent, if not more so in certain cases, as paid apps".[29]
  2. SurGate Labs - In 2014 Comodo acquired SurGate Labs, a Turkish Software company that specializes in secure email an messaging systems. SurGate only recently began marketing its products outside of Turkey and Eastern Europe.[30][31][32]
  3. Comodo Backup - In 2014 Comodo introduced Secured backup for Online Storage.[33]
  4. Comodo Penetration Testing - Comodo Penetration Tests will identify critical attack paths present in network infrastructure manually and provide advice to eliminate threats.[34]

Industry affiliationsEdit

Comodo is a member of the following industry organizations:

  • Certificate Authority Security Council (CASC): In February 2013, Comodo became a founding member of this industry advocacy organization dedicated to addressing industry issues and educating the public on internet security.[35][36]
  • Common Computing Security Standards Forum (CCSF): In 2009 Comodo was a founding member of the CCSF, an industry organization that promotes industry standards that protect end users. Comodo CEO Melih Abdulhayoğlu is considered the founder of the CCSF.[37]
  • CA/Browser Forum: In 2005, Comodo was a founding member of a new consortium of Certificate Authorities and web browser vendors dedicated to promoting industry standards and baseline requirements for internet security.[38][39] Melih Abdulhayoğlu invited top browser providers and certification authorities to a round table to discuss creation of a central authority responsible for delivering digital certificate issuance best practice guidelines.[40]



In response to Symantec's comment over the effectiveness of free Antivirus software, on September 18, 2010, the CEO of Comodo Group challenged Symantec to see which products can defend the consumer better against malware.[41] GCN'S John Breeden understood Comodo's stance on free Antivirus software and challenging Symantec: "This is actually a pretty smart move based on previous reviews of AV performance we've done in the GCN Lab. Our most recent AV review this year showed no functional difference between free and paid programs in terms of stopping viruses, and it's been that way for many years. In fact you have to go all the way back to 2006 to find an AV roundup where viruses were missed by some companies." [42]

Symantec responded saying that if Comodo is interested they should have their product included in tests by independent reviewers.[43]

Comodo volunteered to a Symantec vs. Comodo independent review.[44] Though this showdown did not take place, Comodo has since been included in multiple independent reviews with AV-Test,[45] PC World,[46] Best Antivirus Reviews,[47] AV-Comparatives,[48] and PC Mag.[49]

Certificate hacking Edit

On March 23, 2011, Comodo posted a report that 8 days earlier, on 15 March 2011, a user account with an affiliate registration authority had been compromised and was used to create a new user account that issued nine certificate signing requests.[50] Nine certificates for seven domains were issued.[50] The attack was traced to IP address, which originates in Tehran, Iran.[50] Though the firm initially reported that the breach was the result of a "state-driven attack", it subsequently stated that the origin of the attack may be the "result of an attacker attempting to lay a false trail.".[50][51]

The attack was immediately thwarted, with Comodo revoking all of the bogus certificates. Comodo also stated that it was actively looking into ways to improve the security of its affiliates.[52]

In an update on March 31, 2011, Comodo stated that it detected and thwarted an intrusion into a reseller user account on March 26, 2011. The new controls implemented by Comodo following the incident on March 15, 2011, removed any risk of the fraudulent issue of certificates. Comodo believed the attack was from the same perpetrator as the incident on March 15, 2011.[53]

In regards to this second incident, Comodo stated, "Our CA infrastructure was not compromised. Our keys in our HSMs were not compromised. No certificates have been fraudulently issued. The attempt to fraudulently access the certificate ordering platform to issue a certificate failed." [54]

On March 26, 2011, a person under the username "ComodoHacker" made several posts to claiming to be an Iranian responsible for the attacks.[55][56]

Such issues have been widely reported, and have led to criticism of how certificates are issued and revoked.[57][58][59][60] As of 2016, all of the certificates remain revoked.[50] Microsoft issued a security advisory and update to address the issue at the time of the event.[61][62]

Such attacks are not unique to Comodo - the specifics will vary from CA to CA, RA to RA, but there are so many of these entities, all of them trusted by default, that further holes are deemed to be inevitable.[63]

Association with PrivDogEdit

In February 2015, Comodo was associated with a man-in-the-middle enabling tool known as PrivDog, which claims to protect users against malicious advertising.[64]

PrivDog issued a statement on February 23, 2015, saying, "A minor intermittent defect has been detected in a third party library used by the PrivDog standalone application which potentially affects a very small number of users. This potential issue is only present in PrivDog versions, and The potential issue is not present in the PrivDog plug-in that is distributed with Comodo Browsers, and Comodo has not distributed this version to its users. there are potentially a maximum of 6,294 users in the USA and 57,568 users globally that this could potentially impact. The third party library used by PrivDog is not the same third party library used by Superfish....The potential issue has already been corrected. There will be an update tomorrow which will automatically update all 57,568 users of these specific PrivDog versions." [65]

Certificates issued to known malwareEdit

In 2009 Microsoft MVP Michael Burgess accused Comodo of issuing digital certificates to known malware.[66]

Comodo responded when notified and revoked the issued certificates that contained the rogue malware.[67]

Chromodo browser, ACL, no ASLR, VNC weak authenticationEdit

In January 2016, Tavis Ormandy reported that Comodo's Chromodo browser exhibited a number of vulnerabilities, including disabling of the same-origin policy.[68]

The vulnerability wasn't in the browser itself, which was based on the open-source code behind Google's Chrome browser. Rather, the issue was with an add-on. As soon as Comodo became aware of the issue in early February 2016, the company released a statement and a fix: "As an industry, software in general is always being updated, patched, fixed, addressed, improved - it goes hand in hand with any development cycle...What is critical in software development is how companies address an issue if a certain vulnerability is found - ensuring it never puts the customer at risk." Those using Chromodo immediately received an update.[69] The Chromodo browser was subsequently discontinued by Comodo.

Ormandy noted that Comodo received a "Excellence in Information Security Testing" award from Verizon despite the vulnerability in its browser, despite having its VNC delivered with a default of weak authentication, despite not enabling address space layout randomization (ASLR), and despite using access control lists (ACLs) throughout its product. Ormandy has the opinion that Verizon's certification methodology is at fault here.[70]

Let's Encrypt trademark registration applicationEdit

In October 2015, Comodo applied for "Let's Encrypt", "Comodo Let's Encrypt", and "Let's Encrypt with Comodo" trademarks.[71][72][73] These trademark applications were filed almost a year after the Internet Security Research Group, parent organization of Let's Encrypt, started using the name Let's Encrypt publicly in November 2014,[74] and despite the fact Comodo's "intent to use" trademark filings acknowledge that it has never used "Let's Encrypt" as a brand.

On June 24, 2016, Comodo publicly posted in its forum that it had filed for "express abandonment" of their trademark applications.[75]

Comodo's Chief Technical Officer Robin Alden said, "Comodo has filed for express abandonment of the trademark applications at this time instead of waiting and allowing them to lapse. Following collaboration between Let's Encrypt and Comodo, the trademark issue is now resolved and behind us, and we'd like to thank the Let's Encrypt team for helping to bring it to a resolution." [76]

Dangling markup injection vulnerabilityEdit

On July 25, 2016, Matthew Bryant showed that Comodo's website is vulnerable to dangling markup injection attacks and can send emails to system administrators from Comodo's servers to approve a wildcard certificate issue request which can be used to issue arbitrary wildcard certificates via Comodo's 30-Day PositiveSSL product.[77]

Bryant reached out in June 2016, and on July 25, 2016, Comodo's Chief Technical Officer Robin Alden confirmed a fix was put in place, within the responsible disclosure date per industry standards.[78]

See alsoEdit


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  5. ^ "Comodo Company Overview". Retrieved 14 August 2015. 
  6. ^ "DNS Certification Authority Authorization - Comodo". Retrieved 14 January 2013. 
  7. ^ "Comodo - Contact Us". 
  8. ^ "W3Techs - extensive and reliable web technology surveys". 
  9. ^ Admin TOA. "- Comodo Named Fastest Growing SSL Certificate Authority". Retrieved 2015-03-30. 
  10. ^ "Comodo Security Solutions, Inc". Retrieved 2015-03-30. 
  11. ^ Joe Callan. "Domainers Magazine - : The Next Geo-Targeting Solution - Jul-Aug (Issue 22)". Retrieved 2015-03-30. 
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  13. ^ "Proactive Security Challenge: Results and comments". Difinex Ltd. Retrieved 2010-12-25. 
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  15. ^ "Comodo Antivirus for linux Overview". Retrieved 14 August 2015. 
  16. ^ "Antivirus for windows 10". Retrieved 2010-12-25. 
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  20. ^ Linda Musthaler. "Comodo's "default deny" approach keeps known and unknown malware from endpoints". Retrieved 29 Dec 2016. 
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  22. ^ "Comodo SecureBox always assumes the worst to strengthen endpoint security". BetaNews. Retrieved 2015-03-30. 
  23. ^ "About Comodo Securebox". Retrieved 14 August 2015. 
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  27. ^ "Echte IT-Tiefenverteidigung: Korugan von COMODO schließt interne und externe Sicherheitslücken". Retrieved 2015-03-30. 
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  44. ^ "Challenge to Symantec from Comodo CEO!". Retrieved 23 Dec 2016. 
  45. ^ Ms. Smith. "AV-test Lab tests 16 Linux antivirus products against Windows and Linux malware". Retrieved 23 Dec 2016. 
  46. ^ Erik Larkin. "Comodo Internet Security Free Antivirus Software". Retrieved 23 Dec 2016. 
  47. ^ Daniele P. "Comodo 2016 Review: Malware Protection & Online Security". Retrieved 23 Dec 2016. 
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  50. ^ a b c d e "Report of incident on 15-MAR-2011: Update 31-MAR-2011". Comodo group. Retrieved 2011-03-24. 
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  64. ^ |title=PrivDog Security Advisory (Threat level: LOW) |accessdate=2016-12-30
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  66. ^
  67. ^ "Microsoft MVP Mike Burgess Responds To Comodo's CEO On Comodo Certificates Issued To Malware Distributors". Retrieved 23 Dec 2016. 
  68. ^ |title=Comodo "Chromodo" Browser disables same origin policy, Effectively turning off web security
  69. ^ "Comodo will fix major flaw in knock-off Chrome browser". Retrieved 23 Dec 2016. 
  70. ^ Why Antivirus Standards of Certification Need to Chang, tripwire, 2016-03-23.
  71. ^ "Trademark Status & Document Retrieval". Retrieved 2016-06-23. 
  72. ^ "Trademark Status & Document Retrieval". Retrieved 2016-06-23. 
  73. ^ "Trademark Status & Document Retrieval". Retrieved 2016-06-23. 
  74. ^ Tsidulko, Joseph. "Let's Encrypt, A Free And Automated Certificate Authority, Comes Out Of Stealth Mode". CRN. Retrieved 2016-06-23. 
  75. ^ "Topic: Trademark registration". Retrieved 2016-06-24. 
  76. ^ "Comodo Stands Down From Trademark Tussle with Let's Encrypt". Retrieved 23 Dec 2016. 
  77. ^ "Keeping Positive - Obtaining Arbitrary Wildcard SSL Certificates from Comodo via Dangling Markup Injection". Retrieved 2016-07-29. 
  78. ^ "Keeping Positive – Obtaining Arbitrary Wildcard SSL Certificates from Comodo via Dangling Markup Injection". Retrieved 23 Dec 2016. 

External linksEdit